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source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h.asm @ 35

Last change on this file since 35 was 35, checked in by aitotat, 13 years ago
Cleaned recent changes a bit to save few bytes.
File size: 10.7 KB

Rev	Line
[3]	1	; File name : Int13h_Jump.asm
	2	; Project name : IDE BIOS
	3	; Created date : 21.9.2007
[35]	4	; Last update : 24.8.2010
[3]	5	; Author : Tomi Tilli
	6	; Description : Int 13h BIOS functions (Floppy and Hard disk).
	7
	8	; Section containing code
	9	SECTION .text
	10
	11	;--------------------------------------------------------------------
	12	; Macro that prints drive and function number.
	13	; Used only for debugging.
	14	;
	15	; DEBUG_PRINT_DRIVE_AND_FUNCTION
	16	; Parameters:
	17	; AH: INT 13h function number
	18	; DL: Drive number
	19	; Returns:
	20	; Nothing
	21	; Corrupts registers:
	22	; Nothing
	23	;--------------------------------------------------------------------
	24	%macro DEBUG_PRINT_DRIVE_AND_FUNCTION 0
	25	push dx
	26	push ax
	27	mov al, dl
	28	call Print_IntHexW
	29	pop ax
	30	pop dx
	31	%endmacro
	32
	33
	34	;--------------------------------------------------------------------
	35	; Int 13h software interrupt handler.
	36	; Jumps to specific function defined in AH.
	37	;
	38	; Int13h_Jump
	39	; Parameters:
	40	; AH: Bios function
	41	; DL: Drive number
	42	; Returns:
	43	; Depends on function
	44	; Corrupts registers:
	45	; Flags
	46	;--------------------------------------------------------------------
	47	ALIGN JUMP_ALIGN
	48	Int13h_DiskFunctions:
	49	; Save registers
	50	sti ; Enable interrupts
	51	push ds ; Store DS
	52	push di ; Store DI
	53
	54	;DEBUG_PRINT_DRIVE_AND_FUNCTION
	55	call RamVars_GetSegmentToDS
	56	call DriveXlate_WhenEnteringInt13h
	57	call RamVars_IsFunctionHandledByThisBIOS
	58	jnc SHORT Int13h_DirectCallToAnotherBios
[28]	59	;DEBUG_PRINT_DRIVE_AND_FUNCTION
[3]	60
	61	; Jump to correct BIOS function
	62	cmp ah, 25h ; Valid BIOS function?
	63	ja SHORT Int13h_UnsupportedFunction
	64	mov di, ax
	65	eSHR_IM di, 7 ; Shift function to DI...
	66	and di, BYTE 7Eh ; ...and prepare for word lookup
	67	jmp [cs:di+g_rgw13hFuncJump] ; Jump to BIOS function
	68
	69
	70	;--------------------------------------------------------------------
	71	; Directs call to another INT13h function whose pointer is
	72	; stored to RAMVARS.
	73	;
	74	; Int13h_DirectCallToAnotherBios
	75	; Parameters:
	76	; AH: Bios function
	77	; DL: Drive number
	78	; DS: RAMVARS segment
	79	; DI: Corrupted
	80	; Stack from top to down:
	81	; Original DI
	82	; Original DS
	83	; Returns:
	84	; Depends on function
	85	; Corrupts registers:
	86	; Flags
	87	;--------------------------------------------------------------------
	88	ALIGN JUMP_ALIGN
	89	Int13h_UnsupportedFunction:
	90	Int13h_DirectCallToAnotherBios:
[27]	91	; Temporarily store original DI and DS from stack to RAMVARS
[3]	92	pop WORD [RAMVARS.wI13hDI]
	93	pop WORD [RAMVARS.wI13hDS]
	94
	95	; Special return processing required if target function
	96	; returns something in DL
[35]	97	mov di, Int13h_ReturnFromAnotherBiosWithValueInDL
[3]	98	call DriveXlate_DoesFunctionReturnSomethingInDL
	99	jc SHORT .PushIretAddress
[35]	100	add di, BYTE Int13h_ReturnFromAnotherBios - Int13h_ReturnFromAnotherBiosWithValueInDL
[3]	101	.PushIretAddress:
	102	pushf ; Push FLAGS to simulate INT
	103	push cs ; Push return segment
	104	push di ; Push return offset
	105
	106	; "Return" to another INT 13h with original DI and DS
	107	push WORD [RAMVARS.fpOldI13h+2] ; Segment
	108	push WORD [RAMVARS.fpOldI13h] ; Offset
	109	lds di, [RAMVARS.dwI13DIDS]
	110	cli ; Disable interrupts as INT would
	111	retf
	112
	113
	114	;--------------------------------------------------------------------
[32]	115	; Int13h_CallPreviousInt13hHandler
	116	; Parameters:
	117	; AH: Bios function
	118	; DS: RAMVARS segment
	119	; Other: Depends on function to call
	120	; Returns:
	121	; Depends on function to call
	122	; Corrupts registers:
	123	; FLAGS
	124	;--------------------------------------------------------------------
	125	ALIGN JUMP_ALIGN
	126	Int13h_CallPreviousInt13hHandler:
	127	pushf ; Push flags to simulate INT
	128	cli ; Disable interrupts since INT does that
	129	call FAR [RAMVARS.fpOldI13h]
	130	sti
	131	ret
	132
	133
	134	;--------------------------------------------------------------------
[35]	135	; Int13h_ReturnFromAnotherBiosWithValueInDL
[3]	136	; Int13h_ReturnFromAnotherBios
	137	; Parameters:
	138	; AH: Error code
	139	; DL: Drive number (only on Int13h_ReturnFromAnotherBios)
	140	; CF: Error status
	141	; Returns:
	142	; Depends on function
	143	; Corrupts registers:
	144	; Nothing (not even FLAGS)
	145	;--------------------------------------------------------------------
	146	ALIGN JUMP_ALIGN
[35]	147	Int13h_ReturnFromAnotherBiosWithValueInDL:
[3]	148	push ds
	149	push di
	150	pushf ; Store return flags
	151	call RamVars_GetSegmentToDS
[35]	152	call DriveXlate_WhenLeavingInt13hWithReturnValueInDL
[3]	153	jmp SHORT Int13h_Leave
[35]	154
[3]	155	ALIGN JUMP_ALIGN
	156	Int13h_ReturnFromAnotherBios:
	157	push ds
	158	push di
	159	pushf ; Store return flags
	160	call RamVars_GetSegmentToDS
	161	call DriveXlate_WhenLeavingInt13h
	162	jmp SHORT Int13h_Leave
	163
	164
	165	;--------------------------------------------------------------------
	166	; Returns from any BIOS function implemented by this BIOS.
	167	;
[35]	168	; Int13h_ReturnWithValueInDL
[3]	169	; Int13h_PopXRegsAndReturn
	170	; Int13h_PopDiDsAndReturn
	171	; Parameters:
	172	; DL: Drive number (not Int13h_ReturnWithoutSwappingDrives)
	173	; DS: RAMVARS segment
	174	; Returns:
	175	; Depends on function
	176	; Corrupts registers:
	177	; Nothing (not even FLAGS)
	178	;--------------------------------------------------------------------
	179	ALIGN JUMP_ALIGN
[35]	180	Int13h_ReturnWithValueInDL:
[3]	181	pushf
[35]	182	call DriveXlate_WhenLeavingInt13hWithReturnValueInDL
	183	jmp SHORT Int13h_LeaveAfterStoringErrorCodeToBDA
[28]	184
[3]	185	ALIGN JUMP_ALIGN
	186	Int13h_PopXRegsAndReturn:
	187	pop bx ; Pop old AX to BX
	188	mov al, bl ; Restore AL
	189	pop bx
	190	pop cx
	191	pop dx
[35]	192	; Fall to Int13h_PopDiDsAndReturn
	193
[3]	194	ALIGN JUMP_ALIGN
	195	Int13h_PopDiDsAndReturn:
	196	pushf
	197	call DriveXlate_WhenLeavingInt13h
[35]	198	; Fall to Int13h_LeaveAfterStoringErrorCodeToBDA
	199
	200	Int13h_LeaveAfterStoringErrorCodeToBDA:
	201	LOAD_BDA_SEGMENT_TO ds, di
	202	mov [BDA.bHDStatus], ah
	203	; Fall to Int13h_Leave
	204
[3]	205	Int13h_Leave:
	206	popf
	207	pop di
	208	pop ds
	209	retf 2
	210
	211
	212	; Jump table for correct BIOS function
	213	ALIGN WORD_ALIGN
	214	g_rgw13hFuncJump:
	215	dw AH0h_HandlerForDiskControllerReset ; 00h, Disk Controller Reset (All)
	216	dw AH1h_HandlerForReadDiskStatus ; 01h, Read Disk Status (All)
	217	dw AH2h_HandlerForReadDiskSectors ; 02h, Read Disk Sectors (All)
	218	dw AH3h_HandlerForWriteDiskSectors ; 03h, Write Disk Sectors (All)
	219	dw AH4h_HandlerForVerifyDiskSectors ; 04h, Verify Disk Sectors (All)
	220	dw AH5h_HandlerForFormatDiskTrack ; 05h, Format Disk Track (XT, AT, EISA)
	221	dw Int13h_UnsupportedFunction ; 06h, Format Disk Track with Bad Sectors (XT)
	222	dw Int13h_UnsupportedFunction ; 07h, Format Multiple Cylinders (XT)
	223	dw AH8h_HandlerForReadDiskDriveParameters ; 08h, Read Disk Drive Parameters (All)
	224	dw AH9h_HandlerForInitializeDriveParameters ; 09h, Initialize Drive Parameters (All)
	225	dw Int13h_UnsupportedFunction ; 0Ah, Read Disk Sectors with ECC (XT, AT, EISA)
	226	dw Int13h_UnsupportedFunction ; 0Bh, Write Disk Sectors with ECC (XT, AT, EISA)
	227	dw AHCh_HandlerForSeek ; 0Ch, Seek (All)
	228	dw AHDh_HandlerForResetHardDisk ; 0Dh, Alternate Disk Reset (All)
	229	dw Int13h_UnsupportedFunction ; 0Eh, Read Sector Buffer (XT, PS/1), ESDI Undocumented Diagnostic (PS/2)
	230	dw Int13h_UnsupportedFunction ; 0Fh, Write Sector Buffer (XT, PS/1), ESDI Undocumented Diagnostic (PS/2)
	231	dw AH10h_HandlerForCheckDriveReady ; 10h, Check Drive Ready (All)
	232	dw AH11h_HandlerForRecalibrate ; 11h, Recalibrate (All)
	233	dw Int13h_UnsupportedFunction ; 12h, Controller RAM Diagnostic (XT)
	234	dw Int13h_UnsupportedFunction ; 13h, Drive Diagnostic (XT)
	235	dw AH14h_HandlerForControllerInternalDiagnostic ; 14h, Controller Internal Diagnostic (All)
	236	dw AH15h_HandlerForReadDiskDriveSize ; 15h, Read Disk Drive Size (AT+)
	237	dw Int13h_UnsupportedFunction ; 16h,
	238	dw Int13h_UnsupportedFunction ; 17h,
	239	dw Int13h_UnsupportedFunction ; 18h,
	240	dw Int13h_UnsupportedFunction ; 19h, Park Heads (PS/2)
	241	dw Int13h_UnsupportedFunction ; 1Ah, Format ESDI Drive (PS/2)
	242	dw Int13h_UnsupportedFunction ; 1Bh, Get ESDI Manufacturing Header (PS/2)
	243	dw Int13h_UnsupportedFunction ; 1Ch, ESDI Special Functions (PS/2)
	244	dw Int13h_UnsupportedFunction ; 1Dh,
	245	dw Int13h_UnsupportedFunction ; 1Eh,
	246	dw Int13h_UnsupportedFunction ; 1Fh,
	247	dw Int13h_UnsupportedFunction ; 20h,
	248	dw Int13h_UnsupportedFunction ; 21h, Read Disk Sectors, Multiple Blocks (PS/1)
	249	dw Int13h_UnsupportedFunction ; 22h, Write Disk Sectors, Multiple Blocks (PS/1)
	250	dw AH23h_HandlerForSetControllerFeatures ; 23h, Set Controller Features Register (PS/1)
	251	dw AH24h_HandlerForSetMultipleBlocks ; 24h, Set Multiple Blocks (PS/1)
	252	dw AH25h_HandlerForGetDriveInformation ; 25h, Get Drive Information (PS/1)
	253	; dw Int13h_UnsupportedFunction ; 26h,
	254	; dw Int13h_UnsupportedFunction ; 27h,
	255	; dw Int13h_UnsupportedFunction ; 28h,
	256	; dw Int13h_UnsupportedFunction ; 29h,
	257	; dw Int13h_UnsupportedFunction ; 2Ah,
	258	; dw Int13h_UnsupportedFunction ; 2Bh,
	259	; dw Int13h_UnsupportedFunction ; 2Ch,
	260	; dw Int13h_UnsupportedFunction ; 2Dh,
	261	; dw Int13h_UnsupportedFunction ; 2Eh,
	262	; dw Int13h_UnsupportedFunction ; 2Fh,
	263	; dw Int13h_UnsupportedFunction ; 30h,
	264	; dw Int13h_UnsupportedFunction ; 31h,
	265	; dw Int13h_UnsupportedFunction ; 32h,
	266	; dw Int13h_UnsupportedFunction ; 33h,
	267	; dw Int13h_UnsupportedFunction ; 34h,
	268	; dw Int13h_UnsupportedFunction ; 35h,
	269	; dw Int13h_UnsupportedFunction ; 36h,
	270	; dw Int13h_UnsupportedFunction ; 37h,
	271	; dw Int13h_UnsupportedFunction ; 38h,
	272	; dw Int13h_UnsupportedFunction ; 39h,
	273	; dw Int13h_UnsupportedFunction ; 3Ah,
	274	; dw Int13h_UnsupportedFunction ; 3Bh,
	275	; dw Int13h_UnsupportedFunction ; 3Ch,
	276	; dw Int13h_UnsupportedFunction ; 3Dh,
	277	; dw Int13h_UnsupportedFunction ; 3Eh,
	278	; dw Int13h_UnsupportedFunction ; 3Fh,
	279	; dw Int13h_UnsupportedFunction ; 40h,
	280	; dw Int13h_UnsupportedFunction ; 41h, Check if Extensions Present (EBIOS)
	281	; dw Int13h_UnsupportedFunction ; 42h, Extended Read Sectors (EBIOS)
	282	; dw Int13h_UnsupportedFunction ; 43h, Extended Write Sectors (EBIOS)
	283	; dw Int13h_UnsupportedFunction ; 44h, Extended Verify Sectors (EBIOS)
	284	; dw Int13h_UnsupportedFunction ; 45h, Lock and Unlock Drive (EBIOS)
	285	; dw Int13h_UnsupportedFunction ; 46h, Eject Media Request (EBIOS)
	286	; dw Int13h_UnsupportedFunction ; 47h, Extended Seek (EBIOS)
	287	; dw Int13h_UnsupportedFunction ; 48h, Get Extended Drive Parameters (EBIOS)
	288	; dw Int13h_UnsupportedFunction ; 49h, Get Extended Disk Change Status (EBIOS)
	289	; dw Int13h_UnsupportedFunction ; 4Ah, Initiate Disk Emulation (Bootable CD-ROM)
	290	; dw Int13h_UnsupportedFunction ; 4Bh, Terminate Disk Emulation (Bootable CD-ROM)
	291	; dw Int13h_UnsupportedFunction ; 4Ch, Initiate Disk Emulation and Boot (Bootable CD-ROM)
	292	; dw Int13h_UnsupportedFunction ; 4Dh, Return Boot Catalog (Bootable CD-ROM)
	293	; dw Int13h_UnsupportedFunction ; 4Eh, Set Hardware Configuration (EBIOS)

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